I haven't posted in over a year because I'm primarily a Node developer now. I still don't understand the advantages of [almost] everything being async, but I feel like it must be better or why the hell would anyone deal with callback hell. Also our stuff scales really well and I never have to think about threads. Whenever we find something slow, it's almost always in rendering Express views... not any dev-opsy thing.
I've casually read up on Python's asyncio, but until I use it I won't understand it. I think with asyncio, you have to explicitly decide what is async, instead of things being async by default. It seems like asyncio is really low-level, and you have to manage a lot of the things that Node handles for you. It doesn't seem very fun to use.
Additionally, the Node community has grown so fast. While I used to be able to find a Python library for just about anything, now I have trouble. But, I can usually find several Node libraries.
I really miss so much about Python, and I still don't like writing Javascript, but Node is usually a more practical choice for me now.